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bolt×帝国製鋲 - List of Manufacturers, Suppliers, Companies and Products

bolt Product List

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Stainless bolt

Stainless bolt

Excellent design, corrosion resistance, and durability! Stainless steel bolts that can be used widely.

Stainless steel is excellent in design, corrosion resistance, and durability, and has been widely used in various fields for a long time. At Teikoku Seibou, we manufacture "stainless bolts" based on years of accumulated technology and achievements. The range of rollable diameters is broad, from small to large sizes, meeting various needs (with a maximum neck length of 1,000mm possible). All products are made to order. 【Features】 ■ All products are made to order ■ Manufactured under strict quality control and with extensive experience in all processes including hot forging, solution treatment, NC machining, thread rolling, and surface treatment ■ The rollable range is broad, from small to large diameters (with a maximum neck length of 1,000mm possible) *For more details, please refer to the PDF document or feel free to contact us.

  • bolt
  • stainless

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Hexagon socket bolt (cap)

Hexagon socket bolt (cap)

Improved reliability and workability by preventing loosening with high clamping force.

Hexagon socket bolts (caps) are generally used without being paired with nuts, so referring to them as screws is more accurate. However, since the name hexagon socket bolt has become widespread, they are also called cap bolts. The applicable strength grades are 8.8, 10.9, and 12.9. They are tightened with a hexagon rod wrench (with a maximum shank length of 1,000 mm). *In urgent or emergency cases, please direct any technical inquiries through our website.

  • nut

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Special items, irregular items, and wit screws.

Special items, irregular items, and wit screws.

Please feel free to consult us about standard bolts as well as irregular items and irregular bolts.

Special products, irregular products, and wit screws have established a system that leverages the characteristics of our hot and cold forging technology, cultivated up to today, to respond to the "next needs." We are prepared to accommodate all orders, not only for standard bolts but also for irregular products and irregular bolts, regardless of the quantity. Please feel free to reach out with inquiries such as "Can you make something like this?" or "Is there a more economical way to produce it?" for consultations and estimates. *For urgent or emergency cases, please contact us with technical questions through our website.

  • nut

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Hexagon bolt (4.6, 8.8, 10.9)

Hexagon bolt (4.6, 8.8, 10.9)

Two types are available depending on the size of the two-sided width! Stable torque management during tightening is also possible.

We would like to introduce our "Hex Bolts," which are heat-treated to high strength and possess stable quality. There are two types of hex head bolts based on the width across flats. The applicable strength grades are 4.6, 8.8, and 10.9. At Teikoku Seiko, we can manufacture bolts in various sizes according to user needs. Additionally, since October 1993, we have been producing high-strength hex bolts with a diameter of 10.9 (JIS standard) using advanced heat treatment technology that leverages hot forging techniques (with a maximum shank length of 1,000 mm). 【Features】 ■ Hex bolts (8.8, 10.9) are made from chromium-molybdenum steel (SCM435, 440) and nickel-chromium-molybdenum steel (SNCM439). ■ The high-strength heat treatment performed with our state-of-the-art equipment ensures stable quality (8.8, 10.9). ■ When combined with nuts, stable torque management during tightening is possible. ■ JIS mark certification (JIS B1180). *For more details, please refer to the PDF document or feel free to contact us.

  • nut
  • bolt

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"High-strength hex bolt 8.8・10.9" JIS B 1180

"High-strength hex bolt 8.8・10.9" JIS B 1180

Uses alloy steel and low carbon boron steel for mechanical structures. Complies with JIS B 1051. Stable quality through in-house production.

Introducing the "High Strength Hex Bolt" from Teikoku Seibou, a manufacturer of fastening components related to large machinery and railways. In strength categories "8.8" and "10.9", we use machine structural alloy steel (SCM435) and low-carbon boron steel as materials. We offer a lineup of 9 sizes: M16, M20, M22, M24, M27, M30, M33, M36, and M39. 【Features】 ■ High strength is achieved through heat treatment, ensuring stable quality. ■ When combined with nuts, stable torque management is possible during tightening. *For more details, please refer to the materials. Feel free to contact us with any inquiries.

  • bolt

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Imperial Fastener Co., Ltd. "21st Century Product Catalog"

Imperial Fastener Co., Ltd. "21st Century Product Catalog"

I want to fit into the following needs: "21st Century Product Catalog."

At Teikoku Seibou Co., Ltd., we have been dedicated to each product with reliable technology and a trustworthy system. To further respond to the "next needs," we have developed a system that utilizes the characteristics of both hot and cold forging techniques cultivated up to today, allowing us to accommodate orders for standard bolts as well as special shapes and irregular bolts, regardless of the lot size. In the "21st Century Product Catalog," we include not only "company history," "JIS approved items," "production steel materials," and "main production and inspection equipment," but also a wide range of products such as "10.9 high-strength bolts," "10.9 hex socket bolts," "dog nails and stop nails," "rail screws," "rail fastening bolts," "gauge adjustment fittings," and "splice plate bolts." *For urgent or emergency inquiries, or for technical questions, please contact us directly through our website.

  • bolt
  • nut

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Imperial Fastener Co., Ltd. "Company Profile"

Imperial Fastener Co., Ltd. "Company Profile"

Introduction to the business and product lineup!

At Teikoku Seibou Co., Ltd., we develop automation equipment for self-tapping screws and strive daily to improve our technology, producing better products at lower costs, and receiving support in various fields and areas. We have been manufacturing bolts, screws, and nails, which are essential for social infrastructure such as railways, construction, civil engineering, and shipbuilding, for a century. With the motto "We want to meet the next needs," the entire company is united in contributing to society and advancing into the future as "Teikoku Seibou, an old yet new company." In our "Business Introduction," we sincerely respond to user needs with "technical capabilities" backed by solid technology and a robust system, high productivity utilizing years of knowledge and experience in "production systems," and "quality control" that provides peace of mind through rigorous inspections. Additionally, in the "Product Lineup Introduction," we feature a variety of products including "dog nails," "gauge blocks," "long-headed studs," "SS bolts," "epoxy powder coating," "10.9 and 8.8 high-strength bolts," and "stainless steel hex socket bolts." *For urgent or emergency matters, or technical inquiries, please contact us directly through our website.

  • bolt
  • nut

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Railway-related products: dog spikes, trapezoidal screws, and other applications.

Railway-related products: dog spikes, trapezoidal screws, and other applications.

Would you like to use it for decoration? Please also make use of it as a souvenir.

The "dog nail and trapezoidal screw" is shaped remarkably like a dog's head and can be used for a wide variety of purposes. Please get creative with its use as decorative elements for building exteriors or as hooks for hanging items. If you require it as a commemorative item, engraving text or dates is also possible. 【Features】 ■ Can be used as decorative elements for building exteriors or as hooks for hanging items ■ Engraving text or dates is also possible *For more details, please refer to the PDF document or feel free to contact us.

  • others

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Construction-related products: hot-dip galvanized high-strength hex bolts

Construction-related products: hot-dip galvanized high-strength hex bolts

It has undergone examination based on the Building Standards Act and has obtained general certification from the Minister of Land, Infrastructure, Transport and Tourism.

The high-strength hex bolts with hot-dip galvanized coating from Teikoku Seibou Co., Ltd. have undergone examination based on the Building Standards Act regarding corrosion resistance, mechanical properties, tightening function, delayed fracture characteristics, and construction performance, and have obtained general certification from the Minister of Land, Infrastructure, Transport and Tourism. The coating weight of the bolts, nuts, and washers is over 550g/m². Furthermore, the coating weight of the components is managed under the same standards, ensuring maintenance-free corrosion resistance over the long term. In the zinc plating process, we avoid pickling as much as possible to prevent hydrogen intrusion, eliminating concerns about delayed fracture. The nuts are treated with a special lubrication process, guaranteeing stable axial force during tightening construction using the nut rotation angle method. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.*

  • bolt

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Hexagon socket bolts (caps) for large machinery, civil engineering, and shipbuilding-related products.

Hexagon socket bolts (caps) for large machinery, civil engineering, and shipbuilding-related products.

The compactness of the device has improved, as well as the design performance of the equipment.

Hexagon socket head bolts are generally used without nuts, so the term "screw" is more accurate. However, since the name "hexagon socket bolt" has become widespread, they are also referred to as cap bolts. The applicable strength grades are 8.8, 10.9, and 12.9. They are tightened with a hexagon rod wrench (with a maximum shank length of 1,000 mm). Compacting of devices. Improvement of equipment design performance. Application in narrow spaces and enhanced workability. Increased reliability due to prevention of loosening with high tightening force. *For urgent or emergency cases, or for technical inquiries, please contact us directly through our website.*

  • bolt

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Product Catalog: Hex Bolt (6.8)

Product Catalog: Hex Bolt (6.8)

Large bolts used for heavy machinery and construction equipment.

The "hex bolt (6.8)" is a bolt used in large machinery, civil engineering, and shipbuilding. Hex head bolts come in two types based on the width across the flats: standard hex bolts and small hex bolts. In addition to hex bolts (6.8), we also offer hex bolts (4.6, 8.8, 10.9, 12.9). Our company can manufacture bolts in various sizes according to user needs. (The maximum length of the neck can be up to 1,000mm.) 【Features】 - The quality is stable due to high-strength tempering with advanced heat treatment equipment. - By combining with nuts, stable torque management during tightening is possible. *For urgent or emergency inquiries, please contact us through our website for technical questions.

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【Product Catalog】Hexagon Socket Bolt JIS B1176

【Product Catalog】Hexagon Socket Bolt JIS B1176

Prevents loosening with high clamping force! Bolts used in large machinery, civil engineering, and shipbuilding.

The "Hexagon Socket Bolt JISB1176" is a bolt used in large machinery, civil engineering, and shipbuilding. Hexagon socket head bolts are generally used without nuts. The applicable strength grades are 8.8, 10.9, and 12.9. They are tightened with a hexagon rod wrench (with a maximum shank length of 1,000 mm). Our company has established a system that leverages the characteristics of hot and cold forging technology to accommodate all orders. 【Features】 ○ Compact design of equipment ○ Improved design performance of devices ○ Application in narrow spaces and enhanced workability ○ Increased reliability through prevention of loosening with high tightening force *For urgent or emergency inquiries, please contact us via our website for technical questions.

  • bolt

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Construction-related products High-strength hex bolts

Construction-related products High-strength hex bolts

Construction-related products High-strength hex bolts

High-strength hex bolts (M12 to M30) are actively used in steel frame and bridge construction. 【Features】 - Coated with a surface treatment to prevent rust in highly corrosive environments such as coastal and offshore areas. - Made from special steel materials (developed by Sumitomo Metal Industries, Ltd.) such as low carbon manganese, chromium, and boron steel, ensuring stable mechanical properties of the products. - Utilizing advanced equipment for bolt forming (up to φ27mm), we conduct consistent production, ensuring stable quality. - Leveraging years of hot forging technology, we also manufacture high-strength hex bolts (M33 to M76). - We mass-produce products with stable quality through strict lot management based on JIS B1186. - We maintain a large inventory of standard products and respond quickly to orders. *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • nut
  • bolt

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Stainless bolt

Stainless bolt

It is manufactured under strict quality control with extensive experience in all processes.

Stainless steel bolts are manufactured based on years of our accumulated technology and achievements. Additionally, there are processes such as hot forging, solution treatment, NC cutting, thread rolling, and surface treatment, all carried out under strict quality control and with extensive experience in each process. The range of rollable diameters is wide, from small to large, meeting all kinds of needs. *For urgent or emergency inquiries, please contact us through our website for technical questions.

  • nut

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Forging Technology Introduction DVD 【*Free Gift!】

Forging Technology Introduction DVD 【*Free Gift!】

Free DVD giveaway of "Forging Technology" from Teikoku Seiko, supporting social infrastructure!

Teikoku Seibou Co., Ltd. is a fastener manufacturer that has both hot and cold forging equipment, utilizing the characteristics of each to support many companies with standard bolts, as well as irregular bolts and special steel bolts, regardless of the lot size. Additionally, we are equipped with processing facilities that can consistently handle post-processing of bolts. We respond to various fastener needs. We are offering a DVD that introduces our forging technology for free. The DVD provides an overview of hot and cold forging techniques. *Companies wishing to receive the "DVD" should contact us and specify "DVD request" in their inquiry. *For urgent matters or technical questions, please contact us directly through our website.

  • fastener
  • nut

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